Added changes for version 0.3.0 to CHANGELOG.md

CHANGELOG.md

 Embedded Multicore Building Blocks (EMB²)
 =========================================
 
-Version 0.2.3
+Version 0.3.0
 -------------
 
+### Features:
+- mtapi_c:
+    - Implemented action plugin API
+    - Implemented load balancing for distributed/heterogeneous systems
+    - Implemented OpenCL action plugin
+    - Implemented network action plugin
+- mtapi_cpp:
+    - Added support for distributed/heterogeneous systems
+
+### Changes and improvements:
+- mtapi_c:
+    - Added multi-instance task support and test
+    - Improved notification of worker threads
+- mtapi_cpp:
+    - Moved interface for homogeneous systems to tasks_cpp
+- base_cpp:
+    - Moved tick types to internal namespace and added duration typedefs
+- dataflow_cpp:
+    - Removed spinlocks
+    - Simplified registration of processes (only sources need to be added)
+    - Increased number of task queues in unit test
+    - Added assertion in unit test
+    - Improved exception handling
+    - Removed stray include
+    - Refactored to use tasks_cpp
+- algorithms_cpp:
+    - Restricted partitioners to random access iterators
+    - Added unit tests for partitioners on large ranges
+    - Refactored to use tasks_cpp
+
 ### Bug fixes:
-- Fixed freeing of temporary buffer in MergeSortAllocate
-- Fixed minor bugs in mtapi_c
-- Fixed paths in Doxyfile.in template
+- Fixed unit test for dataflow_cpp
+- Fixed wait-free SPSC queue
+
+### Build system:
+- Fixed compilation for newer CMake Versions (>= 3.1)
+- Changed task test to avoid Jenkins timeout
+- Changed CMakeLists to avoid error if policy is unknown
+- Added mtapi_network_c and mtapi_opencl_c to root CMakeLists
+- Added tasks_cpp to test scripts / batch file
+- Fixed cpplint warnings
+
+### Documentation:
+- Extended tutorial and examples regarding support for distributed/heterogeneous systems including plugins and new task interface
+- Added Doxygen documentation for mtapi_opencl_c and mtapi_network_c
+- Added Doxygen documentation to mtapi_ext.h
+- Updated README and removed limitation to homogeneous systems
+- Added missing concurrency tags in mtapi_cpp
+
+
+Version 0.2.3
+-------------
+
+### Features:
+- None
 
 ### Changes and improvements:
 - Changed use of partitioners in ForEach, Reduce, Scan, Count, and MergeSort
@@ -21,8 +72,10 @@ Version 0.2.3
 - Added tests for Thread::ID (base_cpp), ExecutionPolicy (mtapi_cpp), and error cases in mtapi_c
 - Added tests on empty and negative input ranges in algorithms
 
-### Features:
-- None
+### Bug fixes:
+- Fixed freeing of temporary buffer in MergeSortAllocate
+- Fixed minor bugs in mtapi_c
+- Fixed paths in Doxyfile.in template
 
 ### Build system:
 - Added option to CMake to toggle automatic initialization of MTAPI C++ interface
@@ -43,17 +96,8 @@ Version 0.2.3
 Version 0.2.2
 -------------
 
-### Bug fixes:
-- Fixed 64bit problem in atomics
-- Fixed bug in dataflow_cpp causing network to hang
-- Fixed bug in conversion of core_set
-- Fixed fetch-and-add implementation to support armv7-a
-- Fixed missing freeing of mutex attributes in case of error
-- Fixed bug where closure was allocated with Allocation::New but deleted with operator delete
-- Fixed inconsistent naming of unit test cases
-- Fixed memory allocation in hazard pointer implementation by replacing calls to new and delete with EMB²-specific functions
-- Fixed memory leak in tests for containers
-- Fixed affinity implementation for FreeBSD
+### Features:
+- None
 
 ### Changes and improvements:
 - Added checks for memory leaks in tests
@@ -66,8 +110,17 @@ Version 0.2.2
 - Added assert in embb_tss_get
 - Moved ExecutionPolicy from algorithms to mtapi_cpp, removed Affinity
 
-### Features:
-- None
+### Bug fixes:
+- Fixed 64bit problem in atomics
+- Fixed bug in dataflow_cpp causing network to hang
+- Fixed bug in conversion of core_set
+- Fixed fetch-and-add implementation to support armv7-a
+- Fixed missing freeing of mutex attributes in case of error
+- Fixed bug where closure was allocated with Allocation::New but deleted with operator delete
+- Fixed inconsistent naming of unit test cases
+- Fixed memory allocation in hazard pointer implementation by replacing calls to new and delete with EMB²-specific functions
+- Fixed memory leak in tests for containers
+- Fixed affinity implementation for FreeBSD
 
 ### Build system:
 - Removed cppcheck warnings
@@ -89,14 +142,17 @@ Version 0.2.2
 Version 0.2.1
 -------------
 
+### Features:
+- Added embb_core_count_available() implementation for FreeBSD.
+
+### Changes and improvements:
+- None
+
 ### Bug fixes:
 - Fixed implementation of atomic operations on ARM.
 - Fixed bug in HelpScan routine of hazard pointer implementation.
 - Replaced inclusion of non-standard header malloc.h with stdlib.h.
 
-### Features:
-- Added embb_core_count_available() implementation for FreeBSD.
-
 ### Build system:
 - Added initial support for Clang.
 - Added initial support for Travis.
@@ -111,7 +167,7 @@ Version 0.2.1
 
 ### Documentation:
 - Updated README file, created CHANGELOG file, and added markdown support.
-- Corrected license in COPYING.md (BSD 2-clause).
+- Corrected license in COPYING file (BSD 2-clause).
 - Changed default Doxygen level for API to two.
 - Added check for Doxyfile.in (if not present, do not add Doxygen target).
 - Added PDF image of building blocks and updated tutorial.tex.